Polychlorinated dioxins and dibenzofurans in different environmental matrices: Atmosphere, soil, sediment and water
2000 (English)In: Annali Di Chimica, ISSN 0003-4592, Vol. 90, no 1-2, 1-8 p.Article in journal (Refereed) Published
The major portion of the emissions of polychlorinated dioxins (PCDDs) and dibenzofurans (PCDFs) comes from various types of incinerators or combustions into the air. They all undergo long-range transport, and can be found in other air samplers, soil and sediment but to some extent also in water samples. All these air, soil and water samples have their maximum concentrations close to the outlet. For the soil samplers lower concentrations are found in ploughland and grassland as compared to soil from forest, which normally contain 10-30 times higher concentrations than ploughland and grassland. The sediment samples normally show the same behaviour, higher concentrations close to point sources. However, in southern USA the concentrations of octa- and hepta CDDs are unusually high, even in totally uncontaminated areas. Some of these sediments contain 5-10 times higher values than found in a sediment from the harbor of Hamburg, Germany. A natural formation of these octa- and hepta-CDDs seems to be the explanation. For water samples the PCDD and PCDF values are very low, and special sampling equipments are necessary for these analyzes. The lowest value was found in a drinking water sample.
Place, publisher, year, edition, pages
2000. Vol. 90, no 1-2, 1-8 p.
IdentifiersURN: urn:nbn:se:umu:diva-8935OAI: oai:DiVA.org:umu-8935DiVA: diva2:148606